Just yesterday my 2015 ecodiesel started making a loud, almost metal on metal sounding, ticking or knocking when idling and accelerating. I did an oil change on it since the oil life was reading 2% anyways, and the knock is still there. I currently have the injectors exposed but haven't removed them since the outside around them looks clean and dry. Does anyone have any other thoughts about what could be causing it, I hope the video i took last night will play for people to listen.